package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.BaseContext;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.*;
import com.itheima.reggie.mapper.OrdersMapper;
import com.itheima.reggie.service.*;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
public class OrdersServiceImpl extends ServiceImpl<OrdersMapper, Orders> implements OrdersService {

    @Autowired
    private ShoppingCartService shoppingCartService;
    @Autowired
    private OrderDetailService orderDetailService;
    @Autowired
    private UserService userService;
    @Autowired
    private AddressBookService addressBookService;

    @Override
    public void submit(Orders orders) {
        //获得当前用户id
        Long userId = BaseContext.getCurrentId();
        //查询当前用户的购物车数据
        LambdaQueryWrapper<ShoppingCart> shoppingCartWrapper = new LambdaQueryWrapper<>();
        shoppingCartWrapper.eq(ShoppingCart::getUserId, userId);
        List<ShoppingCart> shoppingCarts = shoppingCartService.list(shoppingCartWrapper);
        if(shoppingCarts==null || shoppingCarts.size()==0){
            throw new CustomException("购物车为空，不能下单！");
        }
        //查询用户数据和地址信息
        User user = userService.getById(BaseContext.getCurrentId());
        AddressBook addressBook = addressBookService.getById(orders.getAddressBookId());
        if(addressBook==null){
            throw new CustomException("地址信息有误，不能下单!");
        }
        AtomicInteger amount = new AtomicInteger(0);
        long id = IdWorker.getId();
        List<OrderDetail> orderDetails = shoppingCarts.stream().map(item -> {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(item, orderDetail);
            orderDetail.setOrderId(id);
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());
        //向订单表插入数据，一条数据
        orders.setId(id);
        orders.setNumber(String.valueOf(id));
        orders.setUserId(userId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(amount.get()));
        orders.setUserName(user.getName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress((addressBook.getProvinceName()==null ? addressBook.getProvinceName():"")
                            +(addressBook.getCityName()==null ? addressBook.getCityName():"")
                            +(addressBook.getDistrictName()==null ? addressBook.getDistrictName():"")
                            +(addressBook.getDetail()==null ? addressBook.getDetail():""));
                            this.save(orders);
        //向订单明细表插入数据，多条数据
        orderDetailService.saveBatch(orderDetails);
        System.out.println("开始删除---------------------------------------------");
        //清空购物车数
        shoppingCartService.remove(shoppingCartWrapper);
    }
}
